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CVE-2026-53500

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the ALLOWED_SOURCES configuration passes plain strings to re.match() without escaping dots, so a hostname differing at dot positions can match the allowlist. This issue is fixed in 7.8.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a2cedff6e8f371425c3ab9c84ea90d1f2bd5513c59035dbc09cfe3b9c268d649
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"thumbor","vendor":"thumbor","versions":[{"status":"affected","version":"< 7.8.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94db647120aaef85a2fecce0ba9a2762f746d245f8d5fcadf72d7fcd6bb89125 · sha256:72facc58fc515ee3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:94db647120aaef85a2fecce0ba9a2762f746d245f8d5fcadf72d7fcd6bb89125 · sha256:72facc58fc515ee3… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:94db647120aaef85a2fecce0ba9a2762f746d245f8d5fcadf72d7fcd6bb89125 · sha256:72facc58fc515ee3… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/thumbor/thumbor/commit/68876715350c6c8f49c324e5515e64908830aed7","tags":["x_refsource_MISC"],"url":"https://github.com/thumbor/thumbor/commit/68876715350c6c8f49c324e5515e64908830aed7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:94db647120aaef85a2fecce0ba9a2762f746d245f8d5fcadf72d7fcd6bb89125 · sha256:72facc58fc515ee3… · /containers/cna/references/1
{"name":"https://github.com/thumbor/thumbor/releases/tag/7.8.0","tags":["x_refsource_MISC"],"url":"https://github.com/thumbor/thumbor/releases/tag/7.8.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:94db647120aaef85a2fecce0ba9a2762f746d245f8d5fcadf72d7fcd6bb89125 · sha256:72facc58fc515ee3… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-6x26-6r6f-m537"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:94db647120aaef85a2fecce0ba9a2762f746d245f8d5fcadf72d7fcd6bb89125 · sha256:72facc58fc515ee3… · /containers/adp/0/references/0
{"name":"https://github.com/thumbor/thumbor/security/advisories/GHSA-6x26-6r6f-m537","tags":["x_refsource_CONFIRM"],"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-6x26-6r6f-m537"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:94db647120aaef85a2fecce0ba9a2762f746d245f8d5fcadf72d7fcd6bb89125 · sha256:72facc58fc515ee3… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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